# -*- coding: utf-8 -*-

#存储《外星人入侵》的所有设置的类
class Settings():
	
	#初始化游戏的设置
	def __init__(self):
		
		#屏幕
		self.screen_width = 1200
		self.screen_height = 800
		self.bg_color = (230,230,230)

		#飞船
		self.ship_limit = 3-1

		#子弹
		self.bullet_width = 3
		self.bullet_height = 15
		self.bullet_color = 60,60,60
		self.bullet_allowed = 3

		#外星人
		self.fleet_drop_speed = 10

		self.score_scale = 1.5
		self.speedup_scale = 1.1

		self.initialize_dynamic_settings()


	def initialize_dynamic_settings(self):
		self.ship_speed_factor = 10
		self.bullet_speed_factor = 10
		self.alien_speed_factor = 1

		self.fleet_direction = 1

		self.alien_points = 50

	def increase_speed(self):
		self.bullet_speed_factor *= self.speedup_scale
		self.alien_speed_factor *= self.speedup_scale
		self.fleet_direction *= self.speedup_scale
		self.alien_points = int(self.alien_points*self.score_scale)